RE: NRF24L01+ TX and RX Timing Issue ?

run_ar — Tue, 18 Sep 2018 08:27:12 GMT

Here you are: https://www.nordicsemi.com/eng/Products/2.4GHz-RF/nRFgo-SDK

RE: NRF24L01+ TX and RX Timing Issue ?

PIC16F84A — Mon, 17 Sep 2018 13:51:59 GMT

Hi. It is not a nordic lib. The library is prepared by me.

Could you please share the link of the example ?

RE: NRF24L01+ TX and RX Timing Issue ?

run_ar — Mon, 17 Sep 2018 13:19:16 GMT

Hi,

Is this a nordic library?

If you look at one of our examples. e.g. nRFgo SDK 2.3.0.10040\source_code\projects\nrfgo_sdk\enhanced_shockburst_examples\ptx\Keil\nRF24le1

You can see that we do something like this:

    // Write payload to radio TX FIFO
    hal_nrf_write_tx_payload(payload, 3U);

    // Toggle radio CE signal to start transmission
    CE_PULSE();

    radio_busy = true;
    // Wait for radio operation to finish
    while (radio_busy)
    {
    }

Then in the ISR we do this:

NRF_ISR()
{
  uint8_t irq_flags;

  // Read and clear IRQ flags from radio
  irq_flags = hal_nrf_get_clear_irq_flags();

  switch(irq_flags)
  {
    // Transmission success
    case (1 << (uint8_t)HAL_NRF_TX_DS):
      radio_busy = false;
      // Data has been sent
      break;
    // Transmission failed (maximum re-transmits)
    case (1 << (uint8_t)HAL_NRF_MAX_RT):
      // When a MAX_RT interrupt occurs the TX payload will not be removed from the TX FIFO.
      // If the packet is to be discarded this must be done manually by flushing the TX FIFO.
      // Alternatively, CE_PULSE() can be called re-starting transmission of the payload.
      // (Will only be possible after the radio irq flags are cleared)
      hal_nrf_flush_tx();
      radio_busy = false;
      break;
    default:
      break;
  }